Cellular Network Infrastructure » Radio Access Network » OsmoTRX

I was running my network using osmo-trx-uhd with an Ettus B200 and I unplugged the devie. Got this:

Thu Aug 29 20:55:42 2019 DMAIN <0000> Transceiver.cpp:1113 [tid=139657724520192] ClockInterface: sending IND CLOCK 738780
Thu Aug 29 20:55:43 2019 DMAIN <0000> Transceiver.cpp:1113 [tid=139657724520192] ClockInterface: sending IND CLOCK 738997
Thu Aug 29 20:55:44 2019 DMAIN <0000> Transceiver.cpp:1113 [tid=139657724520192] ClockInterface: sending IND CLOCK 739213
terminate called after throwing an instance of 'uhd::io_error'
  what():  EnvironmentError: IOError: usb rx6 transfer status: LIBUSB_TRANSFER_NO_DEVICE
[ERROR] [UHD] signal 6 received
An unexpected exception was caught in a task loop.The task loop will now exit, things may not work.EnvironmentError: IOError: usb rx8 transfer status: LIBUSB_TRANSFER_NO_DEVICE
talloc report on 'OsmoTRX' (total   5246 bytes in  21 blocks)
    /home/pespin/dev/sysmocom/git/libosmocore/src/rate_ctr.c:234 contains    512 bytes in   1 blocks (ref 0) 0x6160000057e0
    /home/pespin/dev/sysmocom/git/osmo-trx/CommonLibs/trx_rate_ctr.cpp:276 contains      8 bytes in   1 blocks (ref 0) 0x60b0000c3130
    /home/pespin/dev/sysmocom/git/osmo-trx/CommonLibs/trx_rate_ctr.cpp:275 contains     32 bytes in   1 blocks (ref 0) 0x60c000023620
    telnet_connection              contains      1 bytes in   1 blocks (ref 0) 0x60b0000c2370
    logging                        contains   4303 bytes in  11 blocks (ref 0) 0x60b0000155a0
    struct trx_ctx                 contains    390 bytes in   4 blocks (ref 0) 0x6140000006a0
    msgb                           contains      0 bytes in   1 blocks (ref 0) 0x608000005f80
full talloc report on 'OsmoTRX' (total   5246 bytes in  21 blocks)
...
./run_out.sh: line 12: 28572 Aborted                 (core dumped) $@

(./run_out.sh is the bash script I use to launch osmo-trx-uhd).

So it seems we are not handling a UHD exception in UHDDevice which ends up aborting the entire process. We should handle it and stop osmo-trx-uhd process gracefully through the osmo signal available for that purpose.